Telephone instrument



FIG. 1 is a perspective view of a telephone instrument showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a side view thereof, the opposite side being a mirror image thereto;

FIG. 4 is an end view thereof; and

FIG. 5 is an end view thereof, opposite to that shown in FIG. 4. 

The ornamental design for a telephone instrument, as shown and described. 